Buggy code:
static void setDevice ( Device device ) { } public Display ( ) { } public Display ( DeviceData data ) { } public void addFilter ( int eventType , Listener listener ) { } public void addListener ( int eventType , Listener listener ) { } public void asyncExec ( Runnable runnable ) { } public void beep ( ) { } protected void checkDevice ( ) { } static void checkDisplay ( Thread thread , boolean multiple ) { } protected void checkSubclass ( ) { } public void close ( ) { } String convertToLf ( String text ) { } protected void create ( DeviceData data ) { } void createDisplay ( DeviceData data ) { } static void deregister ( Display display ) { } protected void destroy ( ) { } void destroyDisplay ( ) { } public void disposeExec ( Runnable runnable ) { } int drawProc ( int handle , int damage ) { } void error ( int code ) { } public static Display findDisplay ( Thread thread ) { } boolean filterEvent ( Event event ) { } boolean filters ( int eventType ) { } public Widget findWidget ( int handle ) { } public Widget findWidget ( int handle , int id ) { } public Widget findWidget ( Widget widget , int id ) { } public Shell getActiveShell ( ) { } public Control getCursorControl ( ) { } public Point [ ] getCursorSizes ( ) { } public Point getCursorLocation ( ) { } public static Display getCurrent ( ) { } public static Display getDefault ( ) { } public static void setAppName ( String name ) { } public int getDismissalAlignment ( ) { } public int getDoubleClickTime ( ) { } public Control getFocusControl ( ) { } int getLastEventTime ( ) { } public boolean getHighContrast ( ) { } public int getIconDepth ( ) { } public Point [ ] getIconSizes ( ) { } int getMessageCount ( ) { } public Monitor [ ] getMonitors ( ) { } public Monitor getPrimaryMonitor ( ) { } public Shell [ ] getShells ( ) { } public Color getSystemColor ( int id ) { } public Cursor getSystemCursor ( int id ) { } public Font getSystemFont ( ) { } public Image getSystemImage ( int id ) { } public Tray getSystemTray ( ) { } public Synchronizer getSynchronizer ( ) { } public Thread getSyncThread ( ) { } public Thread getThread ( ) { } int hotkeyProc ( int handle , int data , int info ) { } protected void init ( ) { } void initializeDisplay ( ) { } void initializeScrollbars ( ) { } void initializeWidgetClasses ( ) { } void initializeWidgetColors ( ) { } void initializeWidgetFonts ( ) { } void initializeImages ( ) { } int inputProc ( int data , int rcvid , int message , int size ) { } public int internal_new_GC ( GCData data ) { } public void internal_dispose_GC ( int phGC , GCData data ) { } boolean isValidThread ( ) { } public Object getData ( String key ) { } public Object getData ( ) { } static boolean isValidClass ( Class clazz ) { } public Point map ( Control from , Control to , Point point ) { } public Point map ( Control from , Control to , int x , int y ) { } public Rectangle map ( Control from , Control to , Rectangle rectangle ) { } public Rectangle map ( Control from , Control to , int x , int y , int width , int height ) { } public boolean post ( Event event ) { } void postEvent ( Event event ) { } public boolean readAndDispatch ( ) { checkDevice ( ) ; idle = false ; OS . PtRelease ( ) ; OS . PtHold ( ) ; int id = OS . PtAppAddWorkProc ( app_context , workProc , 0 ) ; OS . PtAppProcessEvent ( app_context ) ; OS . PtAppRemoveWorkProc ( app_context , id ) ; boolean result = true ; if ( idle ) { result = runAsyncMessages ( false ) ; } else { runDeferredEvents ( ) ; } OS . PtRelease ( ) ; OS . PtHold ( ) ; <START_BUG> return result ; <END_BUG> } static void register ( Display display ) { } protected void release ( ) { } void releaseDisplay ( ) { } public void removeFilter ( int eventType , Listener listener ) { } public void removeListener ( int eventType , Listener listener ) { } boolean runAsyncMessages ( boolean all ) { } boolean runDeferredEvents ( ) { } void sendEvent ( int eventType , Event event ) { } public void setCursorLocation ( int x , int y ) { } public void setCursorLocation ( Point point ) { } public void setData ( String key , Object value ) { } public void setData ( Object data ) { } public void setSynchronizer ( Synchronizer synchronizer ) { } public boolean sleep ( ) { } public void syncExec ( Runnable runnable ) { } int textWidth ( String string , byte [ ] font ) { } public void timerExec ( int milliseconds , Runnable runnable ) { } int timerProc ( int handle , int index , int info ) { } static int translateKey ( int key ) { } static int untranslateKey ( int key ) { } public void update ( ) { } public void wake ( ) { } void wakeThread ( ) { } int windowProc ( int handle , int data , int info ) { } int workProc ( int data ) { } String wrapText ( String text , byte [ ] font , int width ) { } }

Fix:
return ( isDisposed ( ) ) || result ;